Merge pull request #233 from codido/spnego

Add support for enabling SPNEGO when building curl

Author: alexcrichton

README.md

@@ -136,6 +136,7 @@ with various Cargo features:
 - `http2`: Enable HTTP/2 support via libnghttp2. Disabled by default.
 - `static-curl`: Use a bundled libcurl version and statically link to it. Disabled by default.
 - `static-ssl`: Use a bundled OpenSSL version and statically link to it. Only applies on platforms that use OpenSSL. Disabled by default.
+- `spengo`: Enable SPENGO support. Disabled by default.
 
 ## Version Support
 

curl-sys/Cargo.toml

@@ -43,3 +43,4 @@ ssl = ["openssl-sys"]
 http2 = ["libnghttp2-sys"]
 static-curl = []
 static-ssl = ["openssl-sys/vendored"]
+spnego = []

curl-sys/build.rs

@@ -179,6 +179,12 @@ fn main() {
         cfg.include(path);
     }
 
+    if cfg!(feature = "spnego") {
+        cfg.define("USE_SPNEGO", None)
+            .file("curl/lib/http_negotiate.c")
+            .file("curl/lib/vauth/vauth.c");
+    }
+
     if windows {
         cfg.define("USE_THREADS_WIN32", None)
             .define("HAVE_IOCTLSOCKET_FIONBIO", None)
@@ -194,6 +200,10 @@ fn main() {
                 .file("curl/lib/vtls/schannel.c")
                 .file("curl/lib/vtls/schannel_verify.c");
         }
+
+        if cfg!(feature = "spnego") {
+            cfg.file("curl/lib/vauth/spnego_sspi.c");
+        }
     } else {
         cfg.define("RECV_TYPE_ARG1", "int")
             .define("HAVE_PTHREAD_H", None)
@@ -243,6 +253,17 @@ fn main() {
             }
         }
 
+        if cfg!(feature = "spnego") {
+            cfg.define("HAVE_GSSAPI", None)
+                .file("curl/lib/curl_gssapi.c")
+                .file("curl/lib/socks_gssapi.c")
+                .file("curl/lib/vauth/spnego_gssapi.c");
+
+            // Link against the MIT gssapi library. It might be desirable to add support for
+            // choosing between MIT and Heimdal libraries in the future.
+            println!("cargo:rustc-link-lib=gssapi_krb5");
+        }
+
         let width = env::var("CARGO_CFG_TARGET_POINTER_WIDTH")
             .unwrap()
             .parse::<usize>()